Air flow measurement device arrangement and selection skills

Abstract: the arrangement of the air flow measurement device and selection skills information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. With the progress of control technology, power plant boiler load and the amount of fuel and operation has achieved online detection and coordination control, but at present there are still most of the unit for a pipe or wind device selection and configuration is not reasonable, and make the ventilation rate cannot be difficult to accurately measure. More flow meter manufacturers choose model price quote you are welcome to inquire, here is the arrangement of the air flow measurement device and selection tips for details. With the progress of control technology, power plant boiler load and the amount of fuel and operation has achieved online detection and coordination control, but at present there are still most of the unit for a pipe or wind device selection and configuration is not reasonable, and make the ventilation rate cannot be difficult to accurately measure, lead to the boiler load. Air flow, fuel quantity cannot be put into automatic, causing unstable combustion, flue gas flow unevenly, boiler efficiency drops, and inadequate ventilation rate plug mill, etc. A basic form and characteristics of wind device, boiler power plant boiler air flow measurement device with duct type venturi/wing/flute type tube/power, Super merib-baal, pig) / venturi throat diameter and so on, the theory and practice proves that the ventilation rate and differential pressure of the wind device provided meet the following formula: Q = K * ( PH值) 1/2 Q - among them - - Through wind device section airflow kg/SP - - - Kg/m3H - air speed - - Wind device provided by the pressure differential Pak - - - Wind device of flow coefficient when the wind device in steady flow field, the type of flow coefficient is constant, through wind device in the cross-sectional area of flow and wind device provided by the square root of the pressure difference of a linear relationship, air volume measurement system is based on this line sexual relations, and differential pressure across the wind devices to figure out the actual air volume, boiler ventilation rate measurement by using wind components for non-standard components, before use should be normalized calibration, determine the flow coefficient. Venturi duct type has simple structure, easy installation, the flow of the output signal is stable and reliable, but because of its ontology is longer, need to take up larger space, in large air duct layout more difficult. Relatively short wing type wind device, pressure air, more complex, arrangement is more suitable in the large ducts, but will cause air pressure loss. Flute type wind device structure is simple, will not result in a loss of pressure, but provide the traffic signal is weak, small changes in the air is not easy to display. Double venturi ( Plug throat diameter) Small volume, convenient installation, will not result in a loss of pressure, can provide strong traffic signal, but the stability of the flow field the demand is higher, once the unsteady flow field, provide the traffic signal is not stable. The type ( Power, super merib-baal, pig) Simple structure, convenient installation, measurement range is a line through air duct, the on-line measuring point of the average, wind pressure loss is small. Second, the cause of wind device linear distortion according to the theory, the flow of air flow measurement device signal, when the wind device in steady flow field, the type of flow coefficient is constant, through wind device in the cross-sectional area of flow and wind device provided by the square root of the pressure difference of a linear relationship, air volume measurement system is based on this line sexual relations, and differential pressure across the wind devices to figure out the actual air volume, boiler ventilation rate measurement used by the wind components for non-standard components, before use should be normalized calibration, determine its flow coefficient, this is the field calibration, but the layout of the pipeline and the stability of the wind field of the intimate relationship, which requires the upstream wind device must have enough straight pipe, the wind through the straight pipe and wind field tend to be relatively stable, if not consider straight section will require wind device to reflect the change of the air volume is not possible, this is the misunderstanding between the air flow measurement by now, often is not allowed on the analysis of air flow measurement, can't chase the root cause. Operation practice shows that the current air flow measurement device commonly used several kinds of measurement accuracy can meet the boiler ventilation rate and the control requirements, but because of the boiler unit structure is complex, wind device layout is often limited, moreover due to air flow measurement system and duct layout in design institute belonging to two major, caused in the design of the disconnect, resulting in significant defects. Practical measurement data show that the flow characteristic of wind device is mainly affected by wind device upstream of the damper change, is a major means of regulating air volume of air, always formed eddy current damper downstream, change when the throttle, and the vortex intensity caused by the throttle and the vortex in the air duct distribution also changed accordingly, when the wind device and the distance between air door through the hours, wind device of fluid will be disorder, the measured flow signal will be distorted. The wind in the downstream of the device damper the effects on the characteristics of the wind device is relatively small.

mass flow meter rosemount vortex flow meter has gained a lot of popularity over the recent past.

You get a wide variety of security, durability and manageability options across mass flow meter. Here’s a link of the brand Sincerity Flow Meter.

To ensure desired results, it is very essential that you get the right kind of from a certified provider..

Beijing Sincerity Automatic Equipment Co., Ltd believes that the average profitability will be sufficient.